While you can choose to sleep with your mattress directly on the floor, we strongly advise against it. Using your Nolah mattress without a proper foundation also voids our Limited Lifetime Warranty, if applicable.
Sleeping with any mattress on the floor presents risks. It prevents proper ventilation, and without air circulation, humidity can build up within the mattress and underneath. This not only makes you sleep hot, but it also creates a moist environment where mold and bacteria thrive. Setting your mattress up on the floor also invites dust mites and other creepy crawlers into your bed.
Again, we strongly recommend you use a foundation to lift your mattress from the ground. But if you do choose to sleep with a mattress directly on the floor, be sure to ventilate it at least once a week.